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Finding the Fourth Proportional to 529,014.84, 730,040.28 and 287,297.49

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Solution

The fourth proportional to 529,014.84, 730,040.28 and 287,297.49 is: 396,470.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,014.84 : 730,040.28 = 287,297.49 : x
  2. Step 2: Convert to fraction form
    529,014.84/730,040.28 = 287,297.49/x
  3. Step 3: Cross multiply
    529,014.84x = 730,040.28 × 287,297.49
  4. Step 4: Simplify right side
    529,014.84x = 209,738,740,042.90
  5. Step 5: Solve for x
    x = 209,738,740,042.90/529,014.84
  6. Step 6: Final answer
    x = 396,470.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.